If shopping malls and and market places accepts it, that will help people us it as a currency
Will possible many people use bitcoin or altcoin if many market place have use bitcoin as currency like shopping mall and modern market. Without legal from government for bitcoin and altcoin as currency shopping mall and modern market never accepted bitcoin as currency, but many people will use bitcoin if become the only payment for shopping mall where have many costumer every day.
It is just a matter of time before bitcoin and altcoins go mainstream. With the passage of time, organizations will accept digital currencies after realizing their importance and supporters. For the present, bitcoin is playing the role of savior which is far more important than anything. It is allowing us to make profits in simplest way. These earned profits then can be used in desired ways.